Add device abstraction code for the UEFI Console and UEFI Shell-based file systems.

Make argv use narrow characters instead of wide characters.
Add setenv functionality.
Add poll() system call.
Change signal names into macros – required for standards compliance.  The enums were renamed and moved to sys/signal.h and the new macros reference the enums.
Added SIGBREAK, which is required for Python.
Modify stdio functions to fail cleanly when called with a NULL File Pointer argument.
Added <sys/cdefs.h> that just includes <sys/EfiCdefs.h>.  By adding this wrapper, we improve compatibility with *nix files which assume <sys/cdefs> exists.
Add <netdb.h>
Added macros for bcopy(), bcmp() and strsep().
Modify the clock() function so that it does not hang when running under an emulation environment such as NT32.
Move TM structure specific macros from the private tzfile.h into <time.h>
Add strncasecmp function.
Add strptime function.
Add gettimeofday function.
Add getcwd function.


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11908 6f19259b-4bc3-4df7-8a09-765794883524

1 files changed, 650 insertions, 0 deletions

diff --git a/StdLib/LibC/Uefi/Devices/UefiShell/daShell.c b/StdLib/LibC/Uefi/Devices/UefiShell/daShell.c
new file mode 100644
index 0000000000..37870e8384
--- /dev/null
+++ b/StdLib/LibC/Uefi/Devices/UefiShell/daShell.c
@@ -0,0 +1,650 @@
+/** @file

+  Abstract device driver for the UEFI Shell-hosted environment.

+

+  In a Shell-hosted environment, this is the driver that is called

+  when no other driver matches.

+

+  Copyright (c) 2011, Intel Corporation. All rights reserved.<BR>

+  This program and the accompanying materials are licensed and made available under

+  the terms and conditions of the BSD License that accompanies this distribution.

+  The full text of the license may be found at

+  http://opensource.org/licenses/bsd-license.

+

+  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,

+  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.

+

+**/

+#include  <Uefi.h>

+#include  <Library/BaseLib.h>

+#include  <Library/MemoryAllocationLib.h>

+#include  <Library/UefiBootServicesTableLib.h>

+#include  <Library/ShellLib.h>

+

+#include  <LibConfig.h>

+#include  <sys/EfiSysCall.h>

+

+#include  <errno.h>

+#include  <string.h>

+#include  <stdlib.h>

+#include  <wctype.h>

+#include  <wchar.h>

+#include  <sys/fcntl.h>

+#include  <kfile.h>

+#include  <Device/Device.h>

+#include  <MainData.h>

+#include  <Efi/SysEfi.h>

+

+static

+int

+EFIAPI

+da_ShellClose(

+  IN      struct __filedes   *Fp

+)

+{

+  EFIerrno = ShellCloseFile( (SHELL_FILE_HANDLE *)&Fp->devdata);

+  if(RETURN_ERROR(EFIerrno)) {

+    return -1;

+  }

+  return 0;

+}

+

+static

+int

+EFIAPI

+da_ShellDelete(

+  struct __filedes   *filp

+  )

+{

+  RETURN_STATUS         Status;

+

+  Status = ShellDeleteFile( (SHELL_FILE_HANDLE *)&filp->devdata);

+  if(Status != RETURN_SUCCESS) {

+    errno = EFI2errno(Status);

+    EFIerrno = Status;

+    return -1;

+  }

+  return 0;

+}

+

+static

+off_t

+EFIAPI

+da_ShellSeek(

+  struct __filedes   *filp,

+  off_t               offset,

+  int                 whence

+)

+{

+  __off_t             CurPos = -1;

+  RETURN_STATUS       Status = RETURN_SUCCESS;

+  SHELL_FILE_HANDLE   FileHandle;

+

+  FileHandle = (SHELL_FILE_HANDLE)filp->devdata;

+

+  if(whence != SEEK_SET) {

+    // We are doing a relative seek

+    if(whence == SEEK_END) {

+      // seeking relative to EOF, so position there first.

+      Status = ShellSetFilePosition( FileHandle, 0xFFFFFFFFFFFFFFFFULL);

+    }

+    if(Status == RETURN_SUCCESS) {

+      // Now, determine our current position.

+      Status = ShellGetFilePosition( FileHandle, (UINT64 *)&CurPos);

+    }

+  }

+  else {

+    CurPos = 0;   // offset is an absolute position for SEEK_SET

+    if(offset < 0) {

+      Status = RETURN_INVALID_PARAMETER;

+    }

+  }

+  if(Status == RETURN_SUCCESS) {

+    /* CurPos now indicates the point we are seeking from, so seek... */

+    Status = ShellSetFilePosition( FileHandle, (UINT64)(CurPos + offset));

+    if(Status == RETURN_SUCCESS) {

+      // Now, determine our final position.

+      Status = ShellGetFilePosition( FileHandle, (UINT64 *)&CurPos);

+    }

+  }

+  if(Status != RETURN_SUCCESS) {

+    if(Status == EFI_UNSUPPORTED) {

+      errno = EISDIR;

+    }

+    else {

+      errno = EFI2errno(Status);

+    }

+    EFIerrno = Status;

+    CurPos = EOF;

+  }

+  return CurPos;

+}

+

+/** The directory path is created with the access permissions specified by

+    perms.

+

+    The directory is closed after it is created.

+

+    @retval   0   The directory was created successfully.

+    @retval  -1   An error occurred and an error code is stored in errno.

+**/

+static

+int

+EFIAPI

+da_ShellMkdir(

+  const char   *path,

+  __mode_t      perms

+  )

+{

+  SHELL_FILE_HANDLE FileHandle;

+  RETURN_STATUS     Status;

+  EFI_FILE_INFO    *FileInfo;

+  wchar_t          *NewPath;

+  int               retval = -1;

+

+  // Convert name from MBCS to WCS and change '/' to '\\'

+  NewPath = NormalizePath( path);

+

+  if(NewPath != NULL) {

+    Status = ShellCreateDirectory( NewPath, &FileHandle);

+    if(Status == RETURN_SUCCESS) {

+      FileInfo = ShellGetFileInfo( FileHandle);

+      Status = RETURN_ABORTED;  // In case ShellGetFileInfo() failed

+      if(FileInfo != NULL) {

+        FileInfo->Attribute = Omode2EFI(perms);

+        Status = ShellSetFileInfo( FileHandle, FileInfo);

+        FreePool(FileInfo);

+        if(Status == RETURN_SUCCESS) {

+          (void)ShellCloseFile(&FileHandle);

+          retval = 0;

+        }

+      }

+    }

+    errno = EFI2errno(Status);

+    EFIerrno = Status;

+    free(NewPath);

+  }

+  return retval;

+}

+

+static

+ssize_t

+EFIAPI

+da_ShellRead(

+  IN OUT  struct __filedes   *filp,

+  IN OUT  off_t              *offset,

+  IN      size_t              BufferSize,

+     OUT  VOID               *Buffer

+)

+{

+  ssize_t           BufSize;

+  SHELL_FILE_HANDLE FileHandle;

+  RETURN_STATUS     Status;

+

+  if(offset != NULL) {

+    BufSize = (ssize_t)da_ShellSeek(filp, *offset, SEEK_SET);

+    if(BufSize >= 0) {

+      filp->f_offset = BufSize;

+    }

+  }

+

+  BufSize = (ssize_t)BufferSize;

+  FileHandle = (SHELL_FILE_HANDLE)filp->devdata;

+

+  Status = ShellReadFile( FileHandle, (UINTN *)&BufSize, Buffer);

+  if(Status != RETURN_SUCCESS) {

+    EFIerrno = Status;

+    errno = EFI2errno(Status);

+    if(Status == RETURN_BUFFER_TOO_SMALL) {

+      BufSize = -BufSize;

+    }

+    else {

+      BufSize = -1;

+    }

+  }

+  else {

+    filp->f_offset += BufSize;  // Advance to where we want to read next.

+  }

+  return BufSize;

+}

+

+static

+ssize_t

+EFIAPI

+da_ShellWrite(

+  IN  struct __filedes     *filp,

+  IN  off_t                *offset,

+  IN  size_t                BufferSize,

+  IN  const void           *Buffer

+  )

+{

+  ssize_t           BufSize;

+  SHELL_FILE_HANDLE FileHandle;

+  RETURN_STATUS     Status;

+  off_t             Position  = 0;

+  int               How       = SEEK_SET;

+

+

+  if((offset != NULL) || (filp->Oflags & O_APPEND)) {

+    if(filp->Oflags & O_APPEND) {

+      Position  = 0;

+      How       = SEEK_END;

+    }

+    else {

+      Position  = *offset;

+      How       = SEEK_SET;

+    }

+    BufSize = (ssize_t)da_ShellSeek(filp, Position, How);

+    if(BufSize >= 0) {

+      filp->f_offset = BufSize;

+    }

+  }

+

+  BufSize = (ssize_t)BufferSize;

+  FileHandle = (SHELL_FILE_HANDLE)filp->devdata;

+

+  Status = ShellWriteFile( FileHandle, (UINTN *)&BufSize, (void *)Buffer);

+

+  if(Status != RETURN_SUCCESS) {

+    EFIerrno = Status;

+    errno = EFI2errno(Status);

+    if(Status == EFI_UNSUPPORTED) {

+      errno = EISDIR;

+    }

+    BufSize = -1;

+  }

+  else {

+    filp->f_offset += BufSize;  // Advance to where we want to write next.

+  }

+

+  return BufSize;

+}

+

+static

+int

+EFIAPI

+da_ShellStat(

+  struct __filedes   *filp,

+  struct stat        *statbuf,

+  void               *Something

+  )

+{

+  SHELL_FILE_HANDLE FileHandle;

+  EFI_FILE_INFO    *FileInfo      = NULL;

+  UINT64            Attributes;

+  RETURN_STATUS     Status;

+  mode_t            newmode;

+

+  FileHandle = (SHELL_FILE_HANDLE)filp->devdata;

+

+  FileInfo = ShellGetFileInfo( FileHandle);

+

+  if(FileInfo != NULL) {

+    // Got the info, now populate statbuf with it

+    statbuf->st_blksize   = S_BLKSIZE;

+    statbuf->st_size      = FileInfo->FileSize;

+    statbuf->st_physsize  = FileInfo->PhysicalSize;

+    statbuf->st_birthtime = Efi2Time( &FileInfo->CreateTime);

+    statbuf->st_atime     = Efi2Time( &FileInfo->LastAccessTime);

+    statbuf->st_mtime     = Efi2Time( &FileInfo->ModificationTime);

+    Attributes = FileInfo->Attribute;

+    newmode               = (mode_t)(Attributes << S_EFISHIFT) | S_ACC_READ;

+    if((Attributes & EFI_FILE_DIRECTORY) == 0) {

+      newmode |= _S_IFREG;

+      if((Attributes & EFI_FILE_READ_ONLY) == 0) {

+        newmode |= S_ACC_WRITE;

+      }

+    }

+    else {

+      newmode |= _S_IFDIR;

+    }

+    statbuf->st_mode = newmode;

+    Status = RETURN_SUCCESS;

+  }

+  else {

+    Status = RETURN_DEVICE_ERROR;

+  }

+  errno     = EFI2errno(Status);

+  EFIerrno  = Status;

+

+  if(FileInfo != NULL) {

+    FreePool(FileInfo);     // Release the buffer allocated by the GetInfo function

+  }

+  return errno? -1 : 0;

+}

+

+static

+int

+EFIAPI

+da_ShellIoctl(

+  struct __filedes   *filp,

+  ULONGN              cmd,

+  void               *argp       ///< May be a pointer or a value

+  )

+{

+  return 0;

+}

+

+/** Open an abstract Shell File.

+**/

+int

+EFIAPI

+da_ShellOpen(

+  struct __filedes   *filp,

+  void               *DevInstance,

+  wchar_t            *Path,

+  wchar_t            *Flags

+  )

+{

+  UINT64                OpenMode;

+  UINT64                Attributes;

+  SHELL_FILE_HANDLE     FileHandle;

+  GenericInstance      *Gip;

+  char                 *NPath;

+  RETURN_STATUS         Status;

+  int                   oflags;

+

+  EFIerrno = RETURN_SUCCESS;

+

+  //Attributes = Omode2EFI(mode);

+  Attributes = 0;

+

+  // Convert oflags to Attributes

+  oflags = filp->Oflags;

+  OpenMode = Oflags2EFI(oflags);

+  if(OpenMode == 0) {

+    errno = EINVAL;

+    return -1;

+  }

+

+  /* Do we care if the file already exists?

+     If O_TRUNC, then delete the file.  It will be created anew subsequently.

+     If O_EXCL, then error if the file exists and O_CREAT is set.

+

+  !!!!!!!!! Change this to use ShellSetFileInfo() to actually truncate the file

+  !!!!!!!!! instead of deleting and re-creating it.

+  */

+  if((oflags & O_TRUNC) || ((oflags & (O_EXCL | O_CREAT)) == (O_EXCL | O_CREAT))) {

+    Status = ShellIsFile( Path );

+    if(Status == RETURN_SUCCESS) {

+      // The file exists

+      if(oflags & O_TRUNC) {

+        NPath = AllocateZeroPool(1024);

+        if(NPath == NULL) {

+          errno = ENOMEM;

+          EFIerrno = RETURN_OUT_OF_RESOURCES;

+          return -1;

+        }

+        wcstombs(NPath, Path, 1024);

+        // We do a truncate by deleting the existing file and creating a new one.

+        if(unlink(NPath) != 0) {

+          filp->f_iflags = 0;    // Release our reservation on this FD

+          FreePool(NPath);

+          return -1;  // errno and EFIerrno are already set.

+        }

+        FreePool(NPath);

+      }

+      else if((oflags & (O_EXCL | O_CREAT)) == (O_EXCL | O_CREAT)) {

+        errno = EEXIST;

+        EFIerrno = RETURN_ACCESS_DENIED;

+        filp->f_iflags = 0;    // Release our reservation on this FD

+        return -1;

+      }

+    }

+  }

+

+  // Call the EFI Shell's Open function

+  Status = ShellOpenFileByName( Path, &FileHandle, OpenMode, Attributes);

+  if(RETURN_ERROR(Status)) {

+    filp->f_iflags = 0;    // Release our reservation on this FD

+    // Set errno based upon Status

+    errno = EFI2errno(Status);

+    EFIerrno = Status;

+    return -1;

+  }

+  // Successfully got a regular File

+  filp->f_iflags |= S_IFREG;

+

+  // Update the info in the fd

+  filp->devdata = (void *)FileHandle;

+

+  Gip = (GenericInstance *)DevInstance;

+  filp->f_offset = 0;

+  filp->f_ops = &Gip->Abstraction;

+//  filp->devdata = FileHandle;

+

+  return 0;

+}

+

+#include  <sys/poll.h>

+/*  Returns a bit mask describing which operations could be completed immediately.

+

+    For now, assume the file system, via the shell, is always ready.

+

+    (POLLIN | POLLRDNORM)   The file system is ready to be read.

+    (POLLOUT)               The file system is ready for output.

+

+*/

+static

+short

+EFIAPI

+da_ShellPoll(

+  struct __filedes   *filp,

+  short               events

+  )

+{

+  UINT32      RdyMask;

+  short       retval = 0;

+

+  RdyMask = (UINT32)filp->Oflags;

+

+  switch(RdyMask & O_ACCMODE) {

+    case O_RDONLY:

+      retval = (POLLIN | POLLRDNORM);

+      break;

+

+    case O_WRONLY:

+      retval = POLLOUT;

+      break;

+

+    case O_RDWR:

+      retval = (POLLIN | POLLRDNORM | POLLOUT);

+      break;

+

+    default:

+      retval = POLLERR;

+      break;

+  }

+  return (retval & (events | POLL_RETONLY));

+}

+

+static

+int

+EFIAPI

+da_ShellRename(

+  const char   *from,

+  const char   *to

+  )

+{

+  RETURN_STATUS       Status;

+  EFI_FILE_INFO      *NewFileInfo;

+  EFI_FILE_INFO      *OldFileInfo;

+  char               *NewFn;

+  int                 OldFd;

+  SHELL_FILE_HANDLE   FileHandle;

+

+  // Open old file

+  OldFd = open(from, O_RDWR, 0);

+  if(OldFd >= 0) {

+    FileHandle = (SHELL_FILE_HANDLE)gMD->fdarray[OldFd].devdata;

+

+    NewFileInfo = malloc(sizeof(EFI_FILE_INFO) + PATH_MAX);

+    if(NewFileInfo != NULL) {

+      OldFileInfo = ShellGetFileInfo( FileHandle);

+      if(OldFileInfo != NULL) {

+        // Copy the Old file info into our new buffer, and free the old.

+        memcpy(OldFileInfo, NewFileInfo, sizeof(EFI_FILE_INFO));

+        FreePool(OldFileInfo);

+        // Strip off all but the file name portion of new

+        NewFn = strrchr(to, '/');

+        if(NewFn == NULL) {

+          NewFn = strrchr(to, '\\');

+          if(NewFn == NULL) {

+            NewFn = (char *)to;

+          }

+        }

+        // Convert new name from MBCS to WCS

+        (void)AsciiStrToUnicodeStr( NewFn, gMD->UString);

+        // Copy the new file name into our new file info buffer

+        wcsncpy(NewFileInfo->FileName, gMD->UString, wcslen(gMD->UString)+1);

+        // Apply the new file name

+        Status = ShellSetFileInfo(FileHandle, NewFileInfo);

+        free(NewFileInfo);

+        if(Status == EFI_SUCCESS) {

+          // File has been successfully renamed.  We are DONE!

+          return 0;

+        }

+        errno = EFI2errno( Status );

+        EFIerrno = Status;

+      }

+      else {

+        errno = EIO;

+      }

+    }

+    else {

+      errno = ENOMEM;

+    }

+  }

+  return -1;

+}

+

+static

+int

+EFIAPI

+da_ShellRmdir(

+  struct __filedes   *filp

+  )

+{

+  SHELL_FILE_HANDLE FileHandle;

+  RETURN_STATUS     Status = RETURN_SUCCESS;

+  EFI_FILE_INFO     *FileInfo = NULL;

+  int               Count = 0;

+  BOOLEAN           NoFile = FALSE;

+

+  errno = 0;    // Make it easier to see if we have an error later

+

+  FileHandle = (SHELL_FILE_HANDLE)filp->devdata;

+

+  FileInfo = ShellGetFileInfo(FileHandle);

+  if(FileInfo != NULL) {

+    if((FileInfo->Attribute & EFI_FILE_DIRECTORY) == 0) {

+      errno = ENOTDIR;

+    }

+    else {

+      // See if the directory has any entries other than ".." and ".".

+      FreePool(FileInfo);  // Free up the buffer from ShellGetFileInfo()

+      Status = ShellFindFirstFile( FileHandle, &FileInfo);

+      if(Status == RETURN_SUCCESS) {

+        ++Count;

+        while(Count < 3) {

+          Status = ShellFindNextFile( FileHandle, FileInfo, &NoFile);

+          if(Status == RETURN_SUCCESS) {

+            if(NoFile) {

+              break;

+            }

+            ++Count;

+          }

+          else {

+            Count = 99;

+          }

+        }

+        FreePool(FileInfo);   // Free buffer from ShellFindFirstFile()

+        if(Count < 3) {

+          // Directory is empty

+          Status = ShellDeleteFile( &FileHandle);

+          if(Status == RETURN_SUCCESS) {

+            EFIerrno = RETURN_SUCCESS;

+            return 0;

+            /* ######## SUCCESSFUL RETURN ######## */

+          }

+        }

+        else {

+          if(Count == 99) {

+            errno = EIO;

+          }

+          else {

+            errno = ENOTEMPTY;

+          }

+        }

+      }

+    }

+  }

+  else {

+    errno = EIO;

+  }

+  EFIerrno = Status;

+  if(errno == 0) {

+    errno = EFI2errno( Status );

+  }

+  return -1;

+}

+

+/** Construct an instance of the abstract Shell device.

+

+    Allocate the instance structure and populate it with the information for

+    the device.

+**/

+RETURN_STATUS

+EFIAPI

+__ctor_DevShell(

+  IN EFI_HANDLE        ImageHandle,

+  IN EFI_SYSTEM_TABLE  *SystemTable

+)

+{

+  GenericInstance    *Stream;

+  DeviceNode     *Node;

+  RETURN_STATUS   Status;

+

+  Stream = (GenericInstance *)AllocateZeroPool(sizeof(GenericInstance));

+  if(Stream == NULL) {

+    return RETURN_OUT_OF_RESOURCES;

+  }

+

+  Stream->Cookie      = CON_COOKIE;

+  Stream->InstanceNum = 1;

+  Stream->Dev = NULL;

+  Stream->Abstraction.fo_close    = &da_ShellClose;

+  Stream->Abstraction.fo_read     = &da_ShellRead;

+  Stream->Abstraction.fo_write    = &da_ShellWrite;

+  Stream->Abstraction.fo_fcntl    = &fnullop_fcntl;

+  Stream->Abstraction.fo_poll     = &da_ShellPoll;

+  Stream->Abstraction.fo_flush    = &fnullop_flush;

+  Stream->Abstraction.fo_stat     = &da_ShellStat;

+  Stream->Abstraction.fo_ioctl    = &fbadop_ioctl;

+  Stream->Abstraction.fo_delete   = &da_ShellDelete;

+  Stream->Abstraction.fo_rmdir    = &da_ShellRmdir;

+  Stream->Abstraction.fo_mkdir    = &da_ShellMkdir;

+  Stream->Abstraction.fo_rename   = &da_ShellRename;

+  Stream->Abstraction.fo_lseek    = &da_ShellSeek;

+

+  Node = __DevRegister(NULL, NULL, &da_ShellOpen, Stream, 1, sizeof(GenericInstance), O_RDWR);

+  Status = EFIerrno;

+  Stream->Parent = Node;

+

+  return  Status;

+}

+

+RETURN_STATUS

+EFIAPI

+__dtor_DevShell(

+  IN EFI_HANDLE        ImageHandle,

+  IN EFI_SYSTEM_TABLE  *SystemTable

+)

+{

+  if(daDefaultDevice != NULL) {

+    if(daDefaultDevice->InstanceList != NULL) {

+      FreePool(daDefaultDevice->InstanceList);

+    }

+    FreePool(daDefaultDevice);

+  }

+  return RETURN_SUCCESS;

+}